What was found
(CAN) GEAR INDICATION SYSTEM 2 WAS UNDER MEL ON FLT, SYSTEM 1 WAS SELECTED AND DURING GEAR EXTENSION ON FLT BACK TO BASE. SYSTEM 1 FAILED AND NO GREEN LIGHT ON NLG. DURING GEAR SWING FOUND, SWITCH WAS JUMPERED AND FAULT DISAPPEARED, ELECTRICAL LOOM FABRICATED , SWITCH CONFIRMED SERVICEABLE. ACFT RETURNED TO SERVICE.